Engineering Thermodynamics For the same compression ratio, the efficiency of dual combustion cycle is

Greater than Diesel cycle and less than Otto cycle
Greater than Diesel cycle
Less than Diesel cycle
Less than Diesel cycle and greater than Otto cycle

Engineering Thermodynamics For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature)

P/T = constant, if v is kept constant
V/T = constant, if p is kept constant
P v = constant, if T is kept constant
T/P = constant, if v is kept constant

Engineering Thermodynamics Boyle's law i.e. pV = constant is applicable to gases under

High range of pressures
All ranges of pressures
Only small range of pressures

Vacuum
273°K
Zero pressure
Centre of earth

Engineering Thermodynamics According to kinetic theory of gases, the absolute zero temperature is attained when

Specific heat of gas is zero
Pressure of the gas is zero
Kinetic energy of the molecules is zero
Volume of the gas is zero

Less than one
Equal to one
None of these
Greater than one